// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
// Distributed under the MIT License (http://opensource.org/licenses/MIT)

#pragma once

#include <array>
#include <memory>
#include <mutex>
#include <spdlog/details/console_globals.h>
#include <spdlog/details/null_mutex.h>
#include <spdlog/sinks/sink.h>
#include <string>

namespace spdlog {
namespace sinks {

    /**
 * This sink prefixes the output with an ANSI escape sequence color code
 * depending on the severity
 * of the message.
 * If no color terminal detected, omit the escape codes.
 */

    template <typename ConsoleMutex> class ansicolor_sink : public sink
    {
    public:
        using mutex_t = typename ConsoleMutex::mutex_t;
        ansicolor_sink(FILE* target_file, color_mode mode);
        ~ansicolor_sink() override = default;

        ansicolor_sink(const ansicolor_sink& other) = delete;
        ansicolor_sink(ansicolor_sink&& other) = delete;

        ansicolor_sink& operator=(const ansicolor_sink& other) = delete;
        ansicolor_sink& operator=(ansicolor_sink&& other) = delete;

        void set_color(level::level_enum color_level, string_view_t color);
        void set_color_mode(color_mode mode);
        bool should_color();

        void log(const details::log_msg& msg) override;
        void flush() override;
        void set_pattern(const std::string& pattern) final;
        void set_formatter(std::unique_ptr<spdlog::formatter> sink_formatter) override;

        // Formatting codes
        const string_view_t reset = "\033[m";
        const string_view_t bold = "\033[1m";
        const string_view_t dark = "\033[2m";
        const string_view_t underline = "\033[4m";
        const string_view_t blink = "\033[5m";
        const string_view_t reverse = "\033[7m";
        const string_view_t concealed = "\033[8m";
        const string_view_t clear_line = "\033[K";

        // Foreground colors
        const string_view_t black = "\033[30m";
        const string_view_t red = "\033[31m";
        const string_view_t green = "\033[32m";
        const string_view_t yellow = "\033[33m";
        const string_view_t blue = "\033[34m";
        const string_view_t magenta = "\033[35m";
        const string_view_t cyan = "\033[36m";
        const string_view_t white = "\033[37m";

        /// Background colors
        const string_view_t on_black = "\033[40m";
        const string_view_t on_red = "\033[41m";
        const string_view_t on_green = "\033[42m";
        const string_view_t on_yellow = "\033[43m";
        const string_view_t on_blue = "\033[44m";
        const string_view_t on_magenta = "\033[45m";
        const string_view_t on_cyan = "\033[46m";
        const string_view_t on_white = "\033[47m";

        /// Bold colors
        const string_view_t yellow_bold = "\033[33m\033[1m";
        const string_view_t red_bold = "\033[31m\033[1m";
        const string_view_t bold_on_red = "\033[1m\033[41m";

    private:
        FILE* target_file_;
        mutex_t& mutex_;
        bool should_do_colors_;
        std::unique_ptr<spdlog::formatter> formatter_;
        std::array<std::string, level::n_levels> colors_;
        void print_ccode_(const string_view_t& color_code);
        void print_range_(const memory_buf_t& formatted, size_t start, size_t end);
        static std::string to_string_(const string_view_t& sv);
    };

    template <typename ConsoleMutex> class ansicolor_stdout_sink : public ansicolor_sink<ConsoleMutex>
    {
    public:
        explicit ansicolor_stdout_sink(color_mode mode = color_mode::automatic);
    };

    template <typename ConsoleMutex> class ansicolor_stderr_sink : public ansicolor_sink<ConsoleMutex>
    {
    public:
        explicit ansicolor_stderr_sink(color_mode mode = color_mode::automatic);
    };

    using ansicolor_stdout_sink_mt = ansicolor_stdout_sink<details::console_mutex>;
    using ansicolor_stdout_sink_st = ansicolor_stdout_sink<details::console_nullmutex>;

    using ansicolor_stderr_sink_mt = ansicolor_stderr_sink<details::console_mutex>;
    using ansicolor_stderr_sink_st = ansicolor_stderr_sink<details::console_nullmutex>;

}  // namespace sinks
}  // namespace spdlog

#ifdef SPDLOG_HEADER_ONLY
#include "ansicolor_sink-inl.h"
#endif
